Stop-motion device for drawing-frames



A. FALLS. 7 STOP MOTION DEVICE FOR DRAWING FRAMES. NO. 494,558.

(No Model.)

Patented Apr. 4., 1893,

Q N 35 w W m .W- k 3.0 m

WlTNESSES.

UNITED STATES ALONZO FALLS, OF LOWELL, MASSACHUSETTS.

STOP-MOTION DEVICE FOR DRAWING-FRAMES.

SPECIFICATION forming part of Letters Patent No. 494,558, dated April 4,1893. Application filed November 29, 1892. Serial No. 453,497. (Nomodel.)

To aZZ whom it may concern.-

Be it known that I, ALONZO FALLS, a citi zen of the United States,residing at Lowell, in the county of Middlesex and State ofMassachusetts, have invented certain new and useful Improvements inStop-Motion Devices for Drawing-Frames, of which the following is aspecification, reference being had therein to the accompanying drawings.

My invention relates to stop-motions for drawing-frames. Stop-motiondevices have been employed in such machines for various purposes and ofvarious forms. Some forms thereof have been combined with the rollers ofthe drawing-frame and arranged to operate to stop the operation of thesaid frame in case of the lapping or accumulating of fibrous materialaround the said rollers, while other forms have been combined with amovable trumpet and arranged to operate to arrest the motion of themachine whenever the sliver passing from the delivering pair ofdrawingrollers through such trumpet to the calenderrolls becomes toothin, breaks, or runs out, and whenever thick places appear therein.

My invention has for. one of its objects to provide improved devices forcausinga drawing-frame to be stopped whenever the sliver laps or windsabout either of the calendarrolls.

It has for another of its objects to combine such devices in adrawing-frame with devices, including a trumpet, operating to effect thestopping of the machine whenever an ordinary breakage of the sliveroccurs, or the sliver runs out or becomes either too-thick or thin.

The invention consists in certain features of improved, simple anddurable construction and arrangement, and in certain novel and usefulcombinations of parts, and first will be described herein with referenceto the accompanying drawings, and then will be particularly pointed outand clearly defined in the claims at the close of this specification.

In the drawings, Figure 1 is a View in side elevation, with certainparts in transverse section, of part of a drawing-franiewith myinvention applied thereto. Fig. 2 is a view in plan of certain partshereinafter to be described. Fig. 3 is a view in plan of the clearerwhich is applied to the calender-rolls. Fig.

4 is a view showing the said clearer in end elevation and representingthe calender-rolls in outline. Figs. 5 and 6, represent the spring plate313 in detail. Fig. 7 is a detail view showing a slight modification.

At is shown the table by which the various parts hereinafter to bedescribed are supported, at 781 are shown the drawing-rollers, and at 51is shown the fibrous material issuing from between the delivering pairof drawing-rollers and passing in the form of a sliver through thetrumpet 302, which is located in front of the drawing rollers and guidesthe sliver into the bite of the calender-rolls 19, 19, which last aremounted in boxes 762 and 763 on the stand 76 secured to the front sideof the table 70.

At 521 is the cover-plate for the calenderrolls.

At 11 is shown one of the detector-spoons at the receiving side of thedrawing-rollers. At 111 is shown the rail or bar on the angular upperedge of which the detector-spoons are pivoted.

At 100 is shown the striker-shaft carrying the striker 101 which engageswith the lower ends of the detector-spoons when the slivers passing overthe upper ends of the said detector-spoons the spoons to swing into avertical position.

At 102 is shown an arm on the striker-shaft 100, the said arm" beingprovided with a pin or projection 104 which enters an inclined slot 105in the free end of an arm 106 that is formed at its other end to fitaround an cecentric 107 on a rotating shaft 108. The weight of the freeend of the arm 106 causes it to descend until the upper end of the slot105 rests upon the pin 104, where it remains, normally, while then isheld fixed or stationaryin consequence of the engagement of the strikerwith the detector-spoon,

movement of the arm is utilized in known break or run out and permit Ifor instance," the striker 101 engaglng in its downwardthe action of theeccentric transmits rocking movement to the striker and acts as a cam.The rising I manner, and through the co-operation of known devices, tostop the machine.

All of the foregoing parts are or may be of known construction and maybe actuated in 5 any suitable known manner.

At 77 is a stand secured on the upper side of the table 70, which standI utilize as a pivotal support for the trumpet-lever 17 and thestop-lever 16. By preference, the two levers just mentioned are pivotedby a single pin 771 to the upper end of the stand 77, the trumpet-leverbeing formed with an offsetting lug on its under side, as shown in Fig.1, through which pin 771 passes. The trumpetlever has pivoted theretothe sliver-plate 30 which latter has formed therein near its forward enda hole in which the trumpet 302 is placed, and at its rear end has a lug301 through a hole in which is passed the pin 173 by which thesliver-plate is pivoted to the trumpet-lever. The sliver-plateconstitutes a supporting arm for the trumpet. Normally, the saidsliver-plate rests on the upper side of the forward extension or arm 171of the trumpet-lever, and the said plate and lever ordinarily move asone around the pivot of the trumpet-lever. The trumpet and thesliver-plate may be swung backward out of close proximity to thecalender-rolls when it is desired to expose or uncover the said rolls,as is occasionally necessary when the attendant cleanses the machine orremoves waste. The sliver-plate is pivoted at such distance from thebite of the calender-rolls as to enable the said rolls to be completelyuncovered and the trumpet to be removed entirely out of the way bysimply throwing back the plate and trumpet. The rear arm of thestop-lever normally rests against the upper-side of the table 70, asrepresented, and the said lever has a forwardly-projecting contactarm161 which extends beneath the sliver-plate into position to be struckthereby, at a point in advance of the pivotal points of thetrumpet-lever and stop-lever, when the trumpet and the sliverplate aredepressed. The rear arms of the trumpet-lever and stoplever areprolonged so that their free ends are located closely adjacent to theshaft 100, on which latter is mounted a second striker 103 which playsin proximity to the said ends. By preference, the rearwardlyextendingarms of the levers, which are made heavy enough to over-balance theforwardlyextending arms thereof, and the parts which are sustained bythe latter, are formed parallel, or substantially so, and the free endsof the said rearwardly-extending arms are adjacent to each other. It isnot absolutely essential that the said rear arms of thelevers should beparallel with each other throughout their whole length, the'requisitebeing that their free ends shall terminate near to each other and to thepath of the striker 103.

55 During the proper working of a drawingframe having applied theretothe stop-motion devices operating in connection with the striker- Vtrumpet, which have just been described,the trumpet is dragged down bythe frictional re sistance to the slipping of the fibrous materialthrough the stricture thereof,'and thereby the trumpet-lever is turnedon its pivot so as to raise its rear end above the path of the striker103, and the said end will not act to stop the movement of the saidstriker and the striker-shaft 100. Then the trumpet is not dragged down,owing to the breakage or absence of the'sliver, or to the same becomingtoo thin, the rear arm of the trumpet lever is permitted to descend sothat its free end arrives in the path of movement of the striker 103,whereupon it arrests the next forward movement of the latter and thestriker-shaft, and occasions the stoppage of the machine, as will beunderstood. So long as the fibrous material continues properly to passthrough the trumpet, the trumpet isdragged down by the frictionalresistance aforesaid until the sliverplate bears upon the contact-arm161 of the stop-lever, the point of contact being in advance of thepoints at which the trumpet-lever and stop-lever are pivoted, thestop-lever constituting a counterweighted stop against which thesliver-plate or arm is held down while the frictional resistancecontinues, it operating to arrest the movement of the trumpet-lever solong as the frictional resistance does not rise above a pre-determinedlimit. When the trumpet is so forcibly dragged down by the frictionalresistance as to cause the stop-lever to be turned on its pivot, as willoccur when an unusual bulk of fibrous material reaches the trumpet, thefree end of the rear arm of the stop-lever is carried into the path ofmovement of the striker 103,witl1 the result that the latter is arrestedin its movement and the machine is stopped. The striker 103 instead ofbeing arranged on an oscillating shaft may be mounted and actuated inany other known or suitable manner. In some cases I may provide forcausing the forwardly extending arm of the trumpet-1ever, instead of thesliver-plate, to bear against the contact-arm when the trumpet isdragged down as herein described, as is shown in Fig. 7.

For the purpose of causing the machine to be stopped in case of thelapping or accumulatin g of fibrous material around the calenderrolls, Iprovide as follows. The calender-roll clearer 52 has shoes 522, 522,lined with clearer cloth 52%, 524, which rest upon the calenderrolls, anorifice 525 for the passage of the sliver and the lower portion of thetrumpet therethrough, and a circular flange 523 which projects upwardthrough a circular hole in the cover-plate 521. Above the said circularflange 523 is located the forward end of a plate 313, the rear end ofthe said plate being connected by a bolt or rivet 314 with the forwardend 312 of a stirrup 31 which is pivoted at 164 to the arm 161 of thestop-lever 16, the rear ends of the two arms of the said stirrup beingformed with longitudinally-extending slots 'about the said bolt or pinas a pivot.

3111, 3111, for the reception of the ends of the ends of the pin 174carried by the rear arm 172 of the trumpet-lever 17. The bolt or pin 314passes vertically through the forward end 312 of the stirrup 31 and therear end of the plate 313, and the said plate is free to rotatehorizontally, as may be desired or necessary, The plate 313 is made,preferably, of spring steel, and in its forward end is made a circularhole 3131 through which the lower portion of the trumpet 302 passes,this hole being made slightly larger than the hole made in thesliver-plate 30 for the reception of the trumpet. The operation of thesedevices is as follows. When the sliver laps or winds about either orboth of the calender-rolls, 19, 19, the fibrous accumulation firstenlarges the diameter ef one or both of the said rolls, and then raisesthe clearer 52. This raises the plate 313 and turns the stirrup 31 onpin 164 as on a pivot, depressing the slotted rear ends of the arms ofthe stirrup and depressing also the rear end 172 of the trumpet-lever 17into the path of the striker 103, thereby causing the forward movementof the said striker to be arrested and the machine to be stopped. \Vhena bunch or knot in the sliver sticks in the trumpet and the trumpet andsliver-plate are pulled down thereby, causing the contactarm of thestop-lever to be borne upon so as to effect the turning of the saidlever and raise its rear arm 162 into position to stop the forwardmovement of the striker 103, the spring plate 313 bends so as to permitthe turning of the trumpet-lever and stop-lever.

The combination of the spring-plate 313, and stirrup 31, with thetrumpet-lever, stoplever, calender-roll clearer, &c., enables me toprovide simply and without undue complication or multiplicity of parts,for stopping the drawing-frame whenever the sliver laps or accumulatesupon the calender-rolls, in addition to stopping the frame wheneverordinary breakage of the sliver occurs, or the latter runs out, or athin or thick place presents itself therein.

1 do not claim broadly herein the combination of parts comprising thetrumpet, the sliver-plate, the trumpet-lever, the stop-lever, thestriker, and the striker-shaft, inasmuch as I have laid claim thereto inmy application for patent filed December 2, 1892, Serial No. 453,868.Herein I seek to cover such devices only when combined with theadditional features of this case, and as hereinafter recited.

I claim as my invention-- 1. The combination with the calendenrolls,

tion of fibrous material upon the rolls, and a pivoted support for thesaid plate engaging with the trumpet-lever and operating to move thesaid lever into the range of the striker when the clearer and plate areraised, substantially as described.

3. The combination with the calender-rolls, the clearer, the trumpet,the trumpet-lever supporting the trumpet, the stop-lever, and thestriker moving in proximity to the ends of the said levers, of a platesupported in position to be borne against bythe clearer when moved by anaccumulation of fibrous material upon the rolls, and a support for thesaid plate pivoted 'upon the stop lever and engaging with the trumpetlever, substantially as described.

4. The combination with the calender-rolls, the clearer, the trumpet,the trumpet-lever supporting the trumpet, and the striker, of a springplate supported in position to be borne against by the clearer whenmoved by an accu mulation of fibrous material upon the rolls, and apivoted support for the said plate engaging with the trumpet-lever andoperating to move the said lever into the range of the striker when theclearer and plate are raised, substantially as described.

5. The combination with the calender-rolls, the clearer, the trumpet,the trumpet-lever supporting the trumpet, the stop-lever, and thestriker moving in proximity to the ends of the said levers, of a springplate supported in position to be borne against by the clearer whenmoved by an accumulation of fibrous material upon the rolls, andasupport for the said spring plate pivoted upon the stop-lever andengaging with the trumpet-lever, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

ALONZO FALLS.

Witn esses:

CHANNING WHITAKER, SAML. G. STEPHENS.

